Rajesh is an ardent fan of literature. Vidyasagar is the original name of Rajesh. He appeared in many films as the lead in the late 1960s and early 1970s, but later on started appearing in character roles.

He grew up watching then stars such as Thyagaraja Bhagavatar, Rajakumari and T. R. Mahalingam. He developed interest in theatre from his childhood and joined Sudarshana Nataka Mandali without his parents' knowledge.